preclinical

/P R IY0 K L IH1 N IH0 K AH0 L/
adjective
  1. 1

    Describing the period of a disease before any symptoms appear

  2. 2

    Describing a test or trial of a new pharmaceutical on animals (or in vitro) rather than on humans

Source: https://en.wiktionary.org/wiki/preclinical